Sungrow SG285HX, Руководство пользователя

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After communication connection is established, users can view inverter information or set in-
verter parameters through the iSolarCloud.
Protection Function
The protective functions are integrated in the inverter, including anti-island protection, LVRT,
DC reverse connection protection, AC short circuit protection, leakage current protection,
surge protection, etc.
Potential Induced Degradation (PID) (Optional)
The PID effect (Potential Induced Degradation) of PV modules will cause serious damage to
PV yield. Through enabling the Anti-PID function, the PID can be suppressed, and this func-
tion applies to the grid-connected operation of the inverter during the day or the reactive
power generation at night is enabled. Through enabling the PID recovery function, the ad-
verse effects caused by PID can be recovered, and this function only works when the DC
side of the inverter is voltage-free.
Anti-PID function and PID recovery function works differently when applied to P-type and N-
type panels.
• P-type panel
When the anti-PID function is enabled, the inverter rises the potential of the negative pole of
PV array of P-type panels to close to the ground potential through PID module to suppress
PID effect.
When the PID recovery function is enabled, the inverter rises the potential between the neg-
ative pole of PV array of P-type panels and the ground to 500Vdc through PID module, to re-
pair the PID effect.
• N-type panel
The electric power engineering company and the user should confirm with the PV panel
manufacturer the compensation voltage direction against PID of the selected panel when
designing the plant.
2 Product Description User Manual